21. The Immune System

What is a foreign substance that may trigger an immune response?

Which of the following is NOT one of the links in the chain of infection?

Which of these is a weakened or dead form of a pathogen that causes an immune response?

What is true of an individual who is lacking a thymus?

What is the immediate action of an allergen when it enters the body for a second time?

How does a capsule help certain bacteria evade detection by the immune system?

Which gland is involved in immune responses?

Which of the following cells have significant functions mainly during bleeding?

Where are Peyer's patches located in the human body?

Which microbial virulence factor is most important for attachment to host respiratory tissues?

When is the administration of RhoGAM immune globulin absolutely necessary?

Which system is primarily responsible for protecting the body against pathogens?

Which of the following is considered the body's primary defense mechanism in the immune system?

Umberto was referred to a/an ______ who specializes in diagnosing and treating blood disorders.

Which of these cells engulf bacteria and break them down as part of the innate immune response?